Cement-block machine.



No. 798,947. PATENTED SEPT. 5, 1905. A. BURKHOLDER.

CEMENT BLOCK MACHINE.

APPLICATION FILED JUNE 14, 1905.

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ALBERT BURKIIOLDIGR, OF CLARKSVILLIC, I'()\\"A.

CEMENT-BLOCK MACHINE.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application led June 14, 1905. Serial No. 265,183.

To mi( u'ml/t it 'n1/my corte/3TH.:

le it known that I, ALBERT BUmtiIoLnnn, a citizen of the United States,residing atClarksville, in the county of Butler and State of Iowa, haveinvented certain new and useful Improvements in Cement- Block Machines;and I do hereby declare the following to be a full, clear, andexactdeseription of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

This invention relates to a cement-block machine, and particularly to amold having removable sides and ends.

The invention has for an object to provide an improved novelconstruction and arrangement of parts for supporting the sides and endsof the mold and for elevating and depressing the core from the mold-box,together with means carried by the sides for engaging' and retaining theends in closed position.

Other and further objects and advantages ot' the invention will behereinafter set forth and the novel features thereof defined by theappended claim.

In the drawings, Figure l is a perspective view showing the mold-boxclosed. Fig. 2 is a similar view with the sides open. Fig. 3

is a detail elevation of the locking-levers Vfor retaining the sides andends in the position shown in Fig. l, and Fig. 4 is a detail perspectiveview.

Like letters of reference referto like parts in the several ligures ofthe drawings.

The letter A designates a frame or standard of any desired constructionor arrangement and provided at its upper portion with a top plate A,having a central aperture A2 therein through which the core B of themold passes. Resting upon this top plate is a bottom board C, upon whichthe molded article is designed to rest and which may be removed with thearticle Vfrom the inold-box. The core B is provided at its lower portionB' with sleeves B2, extended therefrom and su rrounding guide-rods B,supported by the frame of the machine at opposite sides of the core, soas to guide the core-block in a direct vertical line. This block is alsoprovided with stops Bl to limit its upward travel. The core is connectedwith an operating-lever D by means of a link D', pivotally connected tothe lever and core, while the lever is pivotally supported at one sideof the machine, as shown at D", by means of the strzm-bearing embracingthe end of the lever. The opposite extended end Dfof the lever isadapted to be grasped by the operator in raising and lowering the moldand may be retained in its raised position by a rack F, engaging a tooththereon.

The mold-box is composed of the opposite side walls C and the end VallsCi, each of which may be of any desired size oi' conliguration suitablefor the article to be molded. The side walls (iv are supported inposition by means of the extended hinge-arms C, pivotally mounted attheir lower ends C", while the extent of travel of these arms is limitedby means of a holder attached to theframe of the machine. The end wallsare also pro vided with a similar construction of extended hinge, as`shown at C, pivotally mounted at C7 and adapted to engage a holder Cxin order to limit their downward movement, as shown in Fig. 1%. Thewalls of the mold-box when assembled, as shown in Fig. l, are connectedtogether by means of the latch -plate and levers, shown by detail inFig. 3, which comprises levers E, each pivetally mounted upon one of theside walls and connected together at their inner ends by means of a linkE, whereby the motion of one of the levers is transmitted to theopposite lever. Each of these levers is provided with a locking hinge ortooth Ei, adapted to engage with a coperating latch-plate E3, secured tothe end walls at a right angle to the levers and engaging the same, asshown in Fig. l.

In the operation of the invention it will be seen that when the partsare assembled to form the mold-box, as shown in Fig. l, the end and sidewalls are securely held in contact with each other by means of thelevers and latch-plates, while the core is retained in its elevatedposition. As soon as the article molded has become sul'iiciently set thelevers at one end of the box are shifted upward and the end walls thusreleased from the side walls, while the core-operating lever isdepressed to remove it from the mold-box, thus elevating the parts shownin Fig. Q, when the bottom board containing the molded article may beremoved from the box and the article cured or dried in the usual manner.

Having described my invention and set forth its merits, what I claim,and desire to secu re by Letters Patent, is-

A blockmolding machine, comprising a IOO frame, a lever pivotallymounted thereon, a mold-box having ends and sides, which are providedwith hinged arms connected to said sides and ends, it core workingthrough an aperture in the top of the machine, stops upon said coreprojecting from the sides thereof, Vertical guide-rods,4 sleeves carriedbythe core and working upon said guide-rods, elink connection betweensaid core and lever, the ends of the mold-box having' each a notchedbar, a plurality of levers pivoted to each folding side of the boX andprovided with notches', adapted to engage the notches of said bars, theinner ends of said levers being pivotally connected eccentrically, asset forth.

In testimony whereof I hereunto affix Iny signature in the presence oftwo witnesses.

ALBERT BURKHOLDER.

Witnesses:

Louis SLIMMER, R. L. SUMMER.

